Window-cleaning device



Aug. 28, 1928.

F. H. DELLAREE El AL WINDOW CLEANING DEVICE Filed Jan. 9, 1926 PatentedAug. 28, 1928.

UNITED STATES FRANK E. DELLABEE AND JACOB BOMZE, OF DETROIT,IIIGHIIIG'AN.

WINDOW-CLEANING DEVICE.

Application ma January 9, 1m. Serial No. 80.188.

This invention relates to a window cleaning device (primarily designedto facilitate cleaning an polishing panes of glass, but the device is caable of general use for wiping,

5 cleaning, po ishing or otherwise treating various klIldS of surfacesheretofore operated upon by manually manipulated tools.

Our invention aims to provide a motor driven holder for a mop, mg orother instrumentality used for cleansing or treating a surface, thecleanin instrumentality being rapidly revolved an adapted to be movedabout relative to a surface with a minimum degree of hand exertion.

us Our invention further aims to provide a device embodying a smallelectric motor that may be conveniently carried by a Workman, the motorbeing driven from a suitable source of electrical energy as an ordinaryelectric 20 lighting circuit, and the motor is adapted to drive aflexible shaft on the end of which is mounted a holder adapted to bemanipulated by the workman relative to a surface. In the holder anddriven by the flexible shaft is a 25 rotary head to which may beattached various kinds of cleaning instrumentalities.

Our device will be hereinafter specifically described and then claimed,and reference will now be had to the drawing,wherein- Figure 1 is aperspective view of the device showing the manner of using the same;

Fig. 2 is an enlarged longitudinal sectional view of the holder;

Fig. 3 is a cross sectional view taken on the line III-III of Figure 2,and v a Fig. 4 is a similar view taken on the line IVIV of Figure 2.

As illustratlng our device in use for window cleaning purposes, we showaworkman 1 provided with a belt 2 havin a clip 3 from which may besuspended a 'hoo 4 of a clamp 5 surrounding a small electric motor 6.This motor has an end handle 7 constituting a socket for a leading-inconductor 8 by which electric current is supplied to the motor 6; therebeing a suitable switch or trigger 9 at the handle 7 for controlling theoperation of the motor. I

Suitably attached to the motor is a flexible casing 10 for a flexibleshaft 11, said casing having a head 12 on which is mounted the inner e,d of a cylindrical hollow holder 13 provide' with an intermediatepartition 14. On the outer end of the holder 13 is a cylindrical openend housing 15 and mounted in said housing and the partition 14 areanti-frictional radial bearings 16 supporting a driven shaft 17. On theshaft 17, etween the bearings 16, 1s a spacing sleeve 18, and the innerend of the shaftv 17 is bifurcated or slotted, 'as at 19 and made hollowto receive the outer end'of the flexible shaft 11, said shaft having aside pro- )ection 20 establishing a driving relation between theflexible drive shaft and the driven shaft 17. Any suitable means may beemployed for coupling these two shaftstogether so that power may betransmitted from one to the other.

On the outer end of the driven shaft 17 is an enlargement 21 supportin ahead 22, said enlargement cooperating wit a nut or abutment 23 on theinner end of the shaft 17 in preventing longitudinal displacement ofsaid shaft relative to the bearings 16 seated in the holder 13 and thehousing '15. The enlargement 21 is toothed or has a series of grooves 24into one of which may be projected a 5 ring retracted detent or brakemember 25 s idably mounted in an enlargement 26 of the housing 15. Theenlargement 26 accommodates a coiled spring 27 b which the detent isheld normally retracte and by pressing inwardly on the detent it may beplaced in engagement with the enlargement 21 to hold.

the shaft 17 against rotation while the cleaning instrumentality isremoved from the outer end of the shaft.

Mounted in the head 22 is a cup-shaped yieldable shield or guard 28havin an outer flared or bell-shaped end 29, and t is shield or guard ispreferably made of rubber with its outer end more liable or resilientthan its inner end, which is held in the head 22 by a retaining member30. The retaining member 30 is seated in the inner end of the shield orguard 28 and has a stem 31 extending through the shield intoscrewthreaded engagement with a socket 32 in the enlargement 21.Goaxially of the stem 31 on the outer side of the retaining member 30 isa stud 33, and attached to the end of said stud and the cleaninginstrumentality 36 will be revolved against the surface, for instance, a

ane of less 37. If pressure is brought to at by t e workman 1, thecup-sha d member 28 may contact with a pane of g ass without in'uringthe same. The member 28 serves as a s ield for a art of the cleaninginstrumentality 36 an as a guard to prevent the head 22 or the end ofthe housing 15 from contacting with a surface during the use of ourdevice.

It is obvious that our device may be used similar to a mop for applyingvarious liquids or, compounds to a surface, and while in the drawing, weillustrate'a preferred embodiment of our invention, it is to beunderstood that the structural elements are susceptible to suchvariations and modifications as fall within the scope of the appendedclaims.

What We claim is:

1. A cleaning device comprising a hollow a0 holder, a housing at one endthereof, a driven shaft journaled in said holder, a head on said shaftwithin said housing, a support for a cleaning instrumentality inscrewthreaded engagement with said head, and a cup shaped as yieldableshield clamped on said head by and surrounding said support.

. 2. A cleaning devlce as called for in claim 1, wherein said shield ismade of rubber, and a retaining member forming part of said supportclamps said shield in said head.

In testimony whereof we afiix our signatures.

FRA K H. DELLAREE. JACOB BOMZE.

